com.fasterxml.jackson.datatype.guava

Class GuavaModule

java.lang.Object

com.fasterxml.jackson.databind.Module

com.fasterxml.jackson.datatype.guava.GuavaModule

All Implemented Interfaces:

com.fasterxml.jackson.core.Versioned

public class GuavaModule
extends com.fasterxml.jackson.databind.Module

Basic Jackson Module that adds support for Guava types.

Current configurability includes:

• configureAbsentsAsNulls (default: false): Determines whether inclusion strategy of NON_NULL should additionally consider Optional.absent() values (as POJO properties) to be excluded; if true, they will be excluded, if false, they will be included. Note that the defaults for other "Optional" types are different; Guava setting is chosen solely for backwards compatibility.

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.Module

com.fasterxml.jackson.databind.Module.SetupContext

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	_cfgHandleAbsentAsNull Configuration setting that determines whether `Optional.absent()` is considered "same as null" for serialization purposes; that is, to be filtered same as nulls are.

Constructor Summary

Constructors

Constructor and Description
GuavaModule()

Method Summary

Methods

Modifier and Type	Method and Description
GuavaModule	configureAbsentsAsNulls(boolean state) Configuration method that may be used to change configuration setting _cfgHandleAbsentAsNull: enabling means that `Optional.absent()` values are handled like Java nulls (wrt filtering on serialization); disabling that they are only treated as "empty" values, but not like native Java nulls.
boolean	equals(Object o)
String	getModuleName()
int	hashCode()
void	setupModule(com.fasterxml.jackson.databind.Module.SetupContext context)
com.fasterxml.jackson.core.Version	version()

Methods inherited from class com.fasterxml.jackson.databind.Module

getTypeId

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

_cfgHandleAbsentAsNull

protected boolean _cfgHandleAbsentAsNull

Configuration setting that determines whether `Optional.absent()` is considered "same as null" for serialization purposes; that is, to be filtered same as nulls are. If enabled, absent values are treated like nulls; if disabled, they are not. In either case, absent values are always considered "empty".

Default value is `true` for backwards compatibility (2.5 and prior only had this behavior).

Note that this setting MUST be changed BEFORE registering the module: changes after registration will have no effect.

Constructor Detail

GuavaModule

public GuavaModule()

Method Detail

getModuleName

public String getModuleName()

Specified by:

getModuleName in class com.fasterxml.jackson.databind.Module

version

public com.fasterxml.jackson.core.Version version()

Specified by:

version in interface com.fasterxml.jackson.core.Versioned

Specified by:

version in class com.fasterxml.jackson.databind.Module

setupModule

public void setupModule(com.fasterxml.jackson.databind.Module.SetupContext context)

Specified by:

setupModule in class com.fasterxml.jackson.databind.Module

configureAbsentsAsNulls

public GuavaModule configureAbsentsAsNulls(boolean state)

Configuration method that may be used to change configuration setting _cfgHandleAbsentAsNull: enabling means that `Optional.absent()` values are handled like Java nulls (wrt filtering on serialization); disabling that they are only treated as "empty" values, but not like native Java nulls. Recommended setting for this value is `false`, for compatibility with other "optional" values (like JDK 8 optionals); but the default is `true` for backwards compatibility.

Returns:

This module instance, useful for chaining calls

Since:

2.6

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object